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Which of the following statements is wrong about the reaction.
$4 {CrO}_{5} + 6 H_{2} {SO}_{4} \overset{}{\to} 2 {Cr}_{2} {({SO}_{4})}_{3} + 6 H_{2} O + 7 O_{2}$

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By Expert Faculty of Sri Chaitanya

a

It is disproportionation reaction.

b

lt is a an intramolecular redox reaction.

c

Cr acts as an oxidant, whereas O acts as a reductant.

d

CrO5 acts as oxidant and reductant both.

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detailed solution

Correct option is A

It changes to +3 in Cr2(SO4)33e−+Cr6+⟶Cr3+ (reduction) (acts as oxidant)Whereas O in CrO5 changes to O22O⊝⟶O2+2e− (oxidation) (acts of reductant)So, CrO5 acts as oxidant and reductant both.and also it is intramolecular redox reaction since in CrO5, both Cr and O undergoes oxidation and reduction reaction.

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